James erodes weeth



(No Model.) 2 Sheets-Sheet- 1.

J. R. WERTH.

SPARK ARRESTER.

No. 309,014. Patented Dec. 9, 1884.

L p *1 i J bi 41/ I WITNESSES: INVENTOR:

W BY

ATTORNEYS.

i (No Model.) 2 Sheets-She=et 2.

'J. R. WERTH.

SPARK ARRBSTBR. No. 309,014. Patented. Dec. 9, 1884.

' WITNfiSSES: INVENTOR: figwwg BY 0 6-,

70% ATTORNEYS.

UNITED Smear Farmer QQBFFIIQII-D JAMES RHODES \VE 1TH, OF RICHMOND, VIRGINIA.

.SPARic-ARRESTER.

UPECEFICATION forming part of Letters Patent No. 309,01 dated December 9, 1884:.

Application tiled April 12, 1884 To rtii 7/41/0127, it 'nwy concern:

Be it known that I, JAMES R. Wnn'rn, of tichmond, in the county of Hen rice and State of Virginia, have invented certain new and useful Improvements in Spark-. krresters, of which the following is a full, clear, and exact description.

My invention relates to improvements in spark-arrestcrs; and it consists in the peculiar construction and arrangement 0t parts, as hereinafter fully described, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specilication, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 represents a vertical longitudinal section of a locomotive-engine boiler embodying my invention; Fig. 2, a vertical section of the smoke-stack, in part, with the portion of the invention that pertains thereto applied; and Fig. 3, an under view of the deflector. Figs. 2 and 3 are upon alargerscale than Fig. 1. i A is the firebox, and B the smoke-box, of the boiler; G, the body, and D I) the smokeilues.

E is a combustion chamber, arranged between the firc-box and smokebox flue-sheets, beneath the dome F. This construction necessitates the use of two sets oI'smoke-flues, I) D, one set connecting the fire-box with the combustion-chamber, and the other set connecting the combustion chamber with the smoke-box, each set consequently being less than one-half the usual length of the flucs. The combustionchamber has a man-hole in its top, closed by a lid, to admit a workman within said chamber to fasten the flues I) l) to the flueshects ol' the chamber.

Gis the smoke-stack, mounted with the usual head or cap, G. 'Within this cap G, at or near its top, is a hood or deflector, 11, arranged immediatelyover a funnel, I, on the top of a spark-return tube, J, and constructed to turn the sparks received up within it from outside of the funnel toward its center and down into the funnel. I. Connecting this deflect-or H with the lower end portion of the head or cap G, and in continuation, or nearly so, as it were, with the smoke-stack (3-, is an upright cylindrical netting, K, within the head or cap (X0 model.)

G. The under side of the deflector H has an annular groove, b, in it to receive the upper end of the netting K, and has its interior cuplikc deflecting-surfacedivided by any number studs passing from the smoke-stack up to and through the deflector, and being provided with eccentric collars c, to bind'on bands, which pinch or hold the netting. These studs are much the same as are used in holding cones in diamond stacks.

i The object of placing the netting K vertical is to deflect the sparks into the deflector H, and from thence into the funnel I. From the funnel I the deflected sparks may be conveyed by the pipes J J into a spark-chamber, L, on the'i'orward part of the engine, and from thence by pipes within or outside of the tire-box A, or to the combustionchamber E; or the sparks collected within the chamber L may be other wise removed, or they may be conveyed by the pipe J either into the smoke-combustion chamber E orinto the fire-box A, whichlattcr. would be the case where no intermediate co mbustionchamber is used, said pipe J, which may be a simple boiler-tube, passing along within the boiler; or said sparks may be conveyed by an outside pipe, J, to the fire-box. The movement or passage of the sparks may be accelerated through the pipes J J by air or steam jets or et-pipes], that may be provided with regulating-valvcs under the control of the ,engineer, such jets generally, however, only being necessary when the pressure under the deflector and the partial vacuum in the fire-box are insufficient to secure the rapid return of the sparks.

From the foregoing description, it will be seen that no attempt is made to separate the smoke from the sparks until after the mingling 01' the same with the exhaust-steam, no separation taking place in the smoke-b0.\:. Furthermore, the deflector His above the netting K and at the top or above the smoke-stack, no separation can take place below the net of sparks on the netting is next to impossible,

. must be deflected from their course and strike 1 of netting-surface is obtained by reason of the cylindrical shape of the netting, and, second and course of the flying cinders or particles ting and above the exhaust nozzle and as there are no deflectors or obstructions between the tube sheet of the boiler and the netting, I sue-' ceed in utilizing the full effect of the blast. Again, even still more dissimilar is my arrangement fronrthose which provide for the escape of the exhaust-steam into the air without passing through a netting, and only mingles with such sparks as have escaped through the netting.

By my improved construction and arrangement of parts for catching the sparks, I am enabled to use a finer netting than is ordi narily employedfirst-, because a greater arealy, because theplane in which the netting lies is not at right angles to the blast, as is usually the case, but is vertical and parallel with the line of the blast;'conseqnently the l'odgment inasmuch as the netting will be swept clean of all particles of unconsumed coal at or by each escape of the exhaust, and said particles, being caught in the funnel, cannot subject the gauze to repeated abrasion, or, in case of the priming of the boiler, stop up the meshes of the netting. ,WVhile, therefore, by the increased area of openings for the escape of smoke which my arrangement secures, a finer mesh may be used, if preferred, this is not absolutely necessary, as, the direction of the blast being parallel with the cylindrical netting, a coarser gauze may be used, inasmuch as the cinders or floating particles of burning fuel I the gauze at an oblique angle, which will insure the abrasion of the spark before escaping.

M is a pipe for admitting air to the combus- 4o tion-chamber E, to assist in consuming the waste gases. This pipe connects at its receiving end with an annular space, 9, outside of the smoke-stack, and is formed by said smokestack and a surrounding pipe or jacket, N, which is provided with a series of perforations, h, for the admission of air.

Having thus fully described my invention, I claim as new, and desire to secure by Letters Patent 1. The combination, with the smoke-stack G, provided with thewire netting K, and the deflector H, of the chamber L on the forward part of the engine, the funnel I, arranged under the deflector, the pipe J, extending down the center ofthe st-ack,and branch pipe J lead ing to the said chamber L, substantially as herein shown and described. j

2. The combination, with the smoke-stack G, of the deflector H, having the annular 6o groove Z), the wire netting K, the funnel I, and the bolts (1, substantially as herein shown and described.

3. The combination,with'the smoke-stack G, the funnel I, the screen K, and the bolts d, of the deflector H, provided with the radial partitions c, substantially as herein shown and described.

4. The combination, with the smoke-stack G, the deflector H, the funnel I, andthe screen K, of the bolts (I, provided with the eccentric collars c, substantially as herein shown and described.

JAMES RHODES wnnrl-r.

Vitnesses:

GE M. WILsoN, E. B. SHAW. 

